Alarm-clock



(ModeL) S. N. BEHRMAN.

ALARM CLOCK.

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A TTORNEY UNITED STATES PATENT OFFICE.

SAMUEL N. BEHRMAN, OF COVINGTON, KENTUCKY.

ALARM-CLOCK.

SPECIFICATION forming part of Letters Patent No. 469,644, dated February 23, 1892.

Application filed May 11, 1891. Serial No. 392,307. (Model) To all whom it may concern.-

Be it known that I, SAMUEL N. BEHRMAN, a citizen of the United States of America, and a resident of the city of Covington, in the county of Kenton and State of Kentucky, have invented certain new and useful Improvements in Alarm-Clocks, of which the following is a specification.

The several features of my invention and the various advantages resulting from their use conjointly or otherwise will be apparent from the following description and claims.

In the accompanying drawings, making a part of this specification, and to which reference is hereby made, Figure 1 is a side elevation of the devices illustrating my invention. In this figure there are also shown the following parts, viz: a portion of the lever whereby the said devices illustrating my invention are connected with the mechanism for ringing the alarm-clock and the arm for supporting the said devices and a portion of the framework of the clock. Fig. 2 is a vertical section taken through the axial plane of the devices shown in Fig. 1, with this exception, that the lever whereby the said devices are connected to the mechanism for ringing the bell and a sleeve-arbor whereby the hour-hand is turned and a spiral spring thereon and the framework of the clock are shown in elevation. Fig. 3 is a perspective view of the various parts of my device, the parts being shown in the order in which they are arranged when combined together. In this figure the outer or free end of the setting-hand is broken oit to economize space. Fig. 4. is a view in perspective of a portion of the sleeve arbor and'cap and showing a construction thereof whereby the cap may be turn ed by the sleevearbor without the aid of a disk.

I-I indicates a sleeve-arbor, which carries the hour-hand of the clock. The hour-hand is attached in any of the well-known Ways to that port-ion of the arbor which extends to the right in Fig. 1 beyond the setting-hand A. The hour-hand, not being essential to the comprehension of my device, is omitted from the drawings.

Upon the arbor II is located the sleeve E, consisting of a cylindrical portion E of some width and a flange E of greater diameter than the cylinder E. The end of the brace D embraces a portion of the cylinder E next to the flange E of the said cylinder E. The other end of the brace D is attached to the clock-frame or other suitable support. The brace D thus supports the sleeve E and all that the sleeve carries.

Next to the brace D an elastic ring 0 is located on the cylinder E of sleeve E. Next to the right of said annular ring 0 is the ring B, also located on the cylinder E. The righthand edge of the flange E and the brace D, elastic ring 0, and ring B are all located in juxtaposition, and the ring 13 is securely fixed upon the cylinder E in any suitable manner, as by being driven tightly upon the cylinder E or by being soldered or riveted thereto. The ring B thus constitutes an annularflange of the cylinder E, and the object of having the flange E brace D, and ring B in juxtaposition is in order that the elasticity of the spring-ring C shall operate to make the bearing of the cylinder E against the brace D frictionally resistive, so that the ring B shall not turn, except as moved by human agency 7 or by the rotation of the sleeve G when positively interlocked therewith. The right-hand end of the cylinder E extends beyond the ring B, substantially as shown in Fig. 1, and it is that portion of the cylinder E which thus extends beyond the ring B which ordinarily will extend through and beyond the clock-face K. That part of the cylinder E which extends to the right beyond the clock-face, as shown in Fig. 1, is provided with the notch or slot extending lengthwise through the sleeve in the plane of one of its diameters. The hand A, employed to set the alarm-clock, is provided with the annular portion A and the hand A and also with the lug A projecting into the discal space E inclosed by the ring portion A of said hand. \Vhen the ring portion A of the hand is located on the rightiand end of sleeve E, the projection A of said hand enters the slot E of the cylinder E and interlocks therewith. The annular flange E of the sleeve E is provided with the notch E", having one side E straight'that is to say, the plane of this side of the notch coincides with the plane of the diameter of the said sleeve. The otherside E is inclined substantially as shown. Thus a projection pressing against the left-hand side of the ICO flange E will readily enter or leave the notch E on that side E of the notch E which is beveled and is prevented from thus doing at the straight side E of the said notch.

Fixed on the sleeve-arbor H to the left of the flange E is an annular disk F, which rotates with the said sleeve-arbor. This sleevedisk 'F is in juxtaposition with the left-hand side of the flange E of the sleeve E. The disk F is provided with a radial recess or opening F, substantially as shown in Fig. 3.

To the left of the disk F is another disk or sleeve G. located on the sleeve-arbor H, concentric therewith, but turning loosely thereon. This sleeve G is provided on its right side with a projection orlug G, having a beveled end G the inclination of the said beveled end being parallel to the face of the beveled side E when the latter is directly opposite to the former. This projection or lug G is of such a length as that it projects through the slot F of the annular disk F and also extends to the right of said disk F a suflicient distance to fully engage the fiat side E of the notch E of the sleeve E as the disk. G is rotated by the sleeve-arbor of the hour-hand. The discal sleeve G is pressed to the right by suitable elastic mechanism. In the present instance this mechanism consists of the spiral sprihg L, whose left-hand end rests against the frame-piece N on the opposite side of the sleeve-arbor H from that seen in Fig. 1 or is fastened to the sleeve-arbor itself.

That portion of the mechanism of the alarm-clock which consists of the bell and devices more nearly connected with it for ringing it are of any of the well-known forms and, not constituting any portion of my invention, are omitted from the drawings, and further description thereof is deemed unnecessary.

A lever J connects the devices for ringing the bell with my invention illustrated in the drawings. proximity to the left-hand edge of the discal sleeve G, and when the end J of the lever J is by any means moved to the right the bell will immediately be rung. The discal sleeve G is preferably provided with an annular recess G to allow the bent end J of the lever J to enter therein, and thus keeps the lever from vibrating. I

' In Fig. 4 a slight modification of a portion of my device is shown,as follows: The sleevearborH of the hour-hand is provided with a longitudinal feather M, and the discal sleeve G is provided with a recess M, located on the inner surface of the discal sleeve and parallel to the axis thereof. When the discal sleeve G is located on the, sleeve-arbor, the feather M enters the recess M, and the sleeve G is thereby forced to rotate with'the sleevearbor H. When such a construction is employed, the disk F may be omitted.

The mode in which my invention operates is as follows: In attaching this invention to a clock already constructed the hour-hand is The free end J of this lever is in.

turned exactly to an hour on the face. The whole attachment is then placed over the hour-sleeve, the sleeve G being in the closed position, as shown in Fig. 1, the lug G being within the slot E the hand A pointing to the same hour, and the sleeve E being secured through brace D or to the face. The disk F is then securely fastened to the hour-sleeve. When the clock-hand moves away from the hour, the sleeve G is turned with it and is depressed through the lug G by the inclined face E of the sleeve E. This downward movement of the lug G incloses the end of the alarm-lever J. keeping it from vibrating. The object of the annular recessviz., to keep the lever from vibratingis subserved. The lower plain surface of sleeve E holds the sleeve G over the lever until the atoremen tioned hour is reached, when the spring L forces the projection G into the slot E ,thereby releasing the lever J and permitting the alarm mechanism to operate. It can be read ily seen that after once setting the attachment, when the hand A is placed at any hour, I

the sleeve E being carried with it, the alarm will be released at that hour. when the form shown in Fig. 4 is used, the operation will not be altered.

What I claim as new and of my invention, and desire to secure by Letters Patent, is-

1. In combination with the sleeve H for the hour-hand, and the sleeve E and the setting hand A A connected together and located around the sleeve-arbor H, the ring B and the elastic ring 0, located between abutment D and said ring B, the sleeve being provided with the notch E and the discal sleeve G, provided with the sleeve G for engagement with the notch E and the elastic mechanism for pressing ring B toward sleeve E and lever J in proximity to sleeve G, substantially as and for the purposes specified.

2. In combination with the sleeve II for the hour-hand, and the sleeve E and the setting- .and A A connected together and located around the sleeve-arbor H and frictionally connected to the stationary piece or abutment D, the sleeve being provided with the notch E and the discal sleeve G, provided with the projection G for engagement with k the notch E and elastic mechanism for pressing the sleeve G toward sleeve E and lever J in proximity to sleeve G, the abutment D also serving as a brace for supporting the hands and spindles and alarm mechanism therewith independently of the clock-face, substantially as and for the purposes specified.

3. In combination with the sleeve 11 for the hour-hand, and the sleeve E and the. settinghand A A connected together and located around the sleeve-arbor H, the ring Band the elastic ring 0, located between abutments D and said ring B, the sleeve being provided with the notch E and the elastic mechanism for pressing ring B toward sleeve E, lever J in proximity to sleeve G, and the abutment D, connected to the clock-frame and supporting the hands and spindles and alarm mechanism therewith independently of the clock-face, substantially as and for the purposes specified,

4. The sleeve 4E, provided with the annular flange E and main cylindrical portion E,the latter in part embraced by the stationary piece D and the frictional piece 0, located on the cylinder, an annular ring B, fixed on the said cylinder, setting-hand A A, located on the end of the cylinder and provided with the lug A the cylinder E being provided with the recess E into which lug A is received, the annular flange E of the cylinder E being provided with the notch E and discal sleeve G, provided with the projecting lug G, fixed to sleeve-arbor H so as to rotate therewith, and lever J, substantially as and for the purposes specified.

5. The sleeve E, provided with the annular flange E and main cylindrical portion E, the latter in part embraced by the stationary piece D and the frictional piece C, located on the cylinder, an annular ring B, fixed on the said cylinder, setting-hand A A, located on the end of the cylinder and provided with the lug A the cylinder E being provided with the recess E, into which the lug A is received, the annular flange E of the cylinder E being provided with the notch E and discal o sleeve G, provided with the projectinglug G, fixed to sleeve-arbor H so as to rotate therewith, and lever J, compelled to rotate with the sleeve-arbor H by means of the sleeve F, the sleeve F being provided with the notch 3 5 F, through which the lug G extends, and elastic spring L, substantially as and for the purposes specified.

6. The sleeve E, provided with the annular flange E and main cylindrical portion E, the 40 latter in part embraced by the stationary piece D and the frictional piece 0, located on the cylinder, an annular ring B, fixed on the said cylinder, setting-hand A A, located on the end of the cylinder and provided with 5 the lug A, the cylinder E being provided with the recess E, into which the lug A is received, the annular flange E of the cylinder E beingprovided with the notch E and discal sleeve G, fixed to the sleeve-arbor II and pro- 50 Attest:

G. O. WILsON, K. SMITH. 

